Multiple choice

The hottest part of a flame is 1400ºC (2552ºF). What color is this part of the flame.

  1. yellow

  2. brown

  3. orange

  4. blue
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The blue part of a flame indicates complete combustion and is the hottest region. Colors like yellow or orange indicate lower temperatures where combustion is less efficient.

Keep practicing — related questions